N3599X : as350d from 1980 to 1988 original built as AS350D ASTAR to F-G+F-GIPN : from 1988 to 1996 in this time conv AS350BA ex N3599X t+SX-HDO : from 1996 to 1999 ex F-GIPN to F-GUPF F-GUPF : from 1999 ex SX-HDO